# /usr/bin/python3
# encoding:utf-8
a = 1
a = a + 1
print(a)
a += 1
print(a)

str01 = '我爱你中国'
str02 = '亲爱的母亲'
print(str01 + str02)
slogan = '桃李不言'
slogan += '下自成蹊'
print(slogan)

print("10 - 20 = " + str(10 - 20))
print("10 * 20 = " + str(10 * 20))
# 幂运算
print("2 ** 3 = " + str(2 ** 3))
print("10 / 20 = " + str(10 / 20))
# 地板除
print("10 // 20 = " + str(10 // 20))
print("20 // 6 = " + str(20 // 6))
# 取模运算
print("20 % 6 = " + str(20 % 6))
